Concrete crib



May 18 1926. J. H. TROMANHAUSER CONCRETE CRIB Filed Nov. v, 1925v INVENT UB..

u mil" l l l l l l l l l l l lllllil MII n i r H, TRGMNHAUSER, GF TORNTO, ONTARG, CANADA.

e orties..

CONCRETE CRIB.

Application filed November 7, 1925. Serial No. 67,584.

'this invention relates to hollow concrete ln the drawings lilfze numerals ot' reference cribs of a type adapted to be floated to e indicate corresponding' parts in the "diii'erpredetermined position and there sunlr and ent figures. `lilled vith solid materials. Such cribs have ln constructing a hollow concrete crib usually been provided with strong, solid according to my invention, l first cast a reconcrete bottoms which rest on the sea botinforced Concrete slab l, which Slab will 99 toni. lt, however, the sea bottoni be not forni the crib bottom. Y level, the Contact of the crib bottoni thereln practice, of course, a large crib will be with is not continuous and spaces arelet of cellular.construction, that is, divided into not lilled with solid material. Further, it compartments by transverse and longitudiis not feasible .with such a crib to drive nel walls. For the purpose ot the present 6 piles within the contines ot the crib is specilication it may be assumed, however. sometimes desirable for purposes of enchorthattlie crib is of siinple construction pro age auditor foundations. lvl] object, therevided only with four side walls, since in -fore is to devise a cribfbottoin construction such a simple construction may be einbodiec which will enable the crib iilling; to follow all the features of iny invention. 70 the sea bottoni contours, and which will perrlbe concrete bottoni slab l having` se init piling` to be driven within the contines the walls 2 are cast with their footings of the crib it necessary. Such 'a bottoni, overlapping` the edges of the slab as shown.

'preferably shouldl possess the following` ln order to ensure that the bottoni may be characteristics: broken out of the rabbets in the ootings, 75

It inust be watertip-ht and adapted to which result troni Vthe process of manufacwithstand the hyt rostatic pressure wvlien ture and, at the saine tiine to ensure that the crib is floating. the joints between the bottoni slabs and 'It inust be thin enough to crush down the footings are watertight, l preferably under the weight of the crib filling when coat the margins and edges ofthe bottoni @0 not supported. slab with tar or any like substance which t should be thin enough so that piles may will function in the manner desired. i/Vhen be driven through n when-desired. the crib 1s completed and, before it is It should, when broken down, come away floated on its own bottoni, a backing, pret- .'treely from the crib wall foot-ings, so that erably of wood, is applied above the bot $35 no damage is done to the latter, and so toni, which is braced vfrein the side walls. that the whole bottoni may be lifted out This backing is Vpreferably constructed as if desired. follows: l attain my object by lirst tornnng a con- A wooden haelt el, which may be of, say,

crete bottoni slab, and then casting' the wall f2 plank, is applied directly to the upper il@ tootings oi' the crib over the edges ot the surtace of the bottoni slab l. On this)L slab in such a manner that, though the superimposed one or inore cross bars .5,pretjoints torined are substantially watertight, eraoly ot heavy timber. @n each cross bar 40 the bottoni may be readily broken out of is secured av block 6. Against the opposite the rabbets sc forined when the need arises. ends of this block bear the diagonalbraccs llefore the iinished crib is ioated on its 7, the other ends or" which bear against oppoown bottoni, a wooden backingis applied site walls of the crib which are preferably above the bottom, which is braced troni the notched to provide shoulders for engagement:

side walls in the inanner hereinafter dewith the ends of the braces. Between the scribed and illustrated in the acconunanj)7- ends of one or both braces and the block 6, 1Go ing drawings in whichwedges 8 are driven to tighten the lower Fig. l is a plan view ot part of a crib ends of the braces irmly against the cross constructed in accordance with iny invenbars to properly brace the bottoni against.

tion; the upward hydrostatic pressure when the Fig. 2 a. verticall section, partly broken crib is floated. A lever 9 is preferably in- W15 away, taken on the line 2 2 in Fig. l; and troduced between the wedges 8 and the end Fig. 3 a similar View taken on the line or" the bloei; 6 to facilitate the loosening` ot 3-3 in Fig. lY the braces when the bottoni is to be broken beinj readily ren'ioyahle b j an rah-Jets; and ar removable backing secured r end, which may be against Jihe upper surface of the slab.

i fr hollowvv concrete Crib havinlr the foot f n completen. i is floated ings of its "alls 'iormed with c" vnwardlf,Y an rlie bot- 'lia-:fhg rabbets; a separate relatively fragile 5a rushed upwardly by projections bottom :i ab having its margin fitting in szfd bottom or conversely may be rabbets; a backing me nber agpied to the ly into any depressions by upper surface oi the slab; and removable ng deposited in the crib. bra-e5 bearing against the walls and saC.

ni being thin, it may be readily ,Jac ing member. 53 l r y piles, desired7 while from the 6, A hollow concrete crib haring the fooinanre of the joint between the bottom and walls formed with downwardlj.' the walls, the bottom slab may be broken 'rabbetsg a separate relatively frag .c cleanly away from the side walls and lifted slab haring its mar litting in ont. in pieces. said rablets; a cross bar crossing; thA l; Cl

From the above description it will be seen ov said slab; and removable bi aces b 1 that l have devised a process ot manniacaff'ainst. he walls and said cross ba turing hollow concrete cribs and have dv llow concrete crib harin Yeloped a construction which will satisfacs wells formed with do torily attain the objects of my invention as iac ibets; a sepa 'ate relativcl set out in this specification. having its margin ltth What claim is: removable back 1i" 'l e.;

l. EL process of forming hollow concrete per mice o4 tbe s cribs which consists in forming a. thin eoning the backing; and

crete slab and. iter the slab has set', casting ing against the wall 'i0 the crib walls thereon with only a portion S. A hollow crib haring ot of the footings adjacent their edges overly- Yforced concrete formed with downwar ingthe margins of the slab. lacing shoulders adjacent tb ir lower c A process of forming hollow concrete and a spztrae relatively than bottoni ol" re cribs which consists in forming a thin coniniorce-i. corcrete haring' its margin enea@ T5 crete slab and, after the slab has set, applying said shonlc ers and having a '1' 'er1 fr' f" ing a tar-like coating to the edges and the frangib e seal with said walls.i margins o' the upper surface slab; and cast- 9. A hollow crib having walls ot rc-ining the crib walls on said slab with only a forced concrete 'formed sith d inf-fgzrillj.'

33 portion or" the ootngs adjacent their edges facing shoulders adiacent their lfni'er edges; S'L

LL' overlying the margins o' the slab. aseparate relatively thin bottom ot re-in- 3. A hollow concrete crib having the Jootforied concrete having its margin enga gino:

ings ot' its walls formed with downwardly said shoulders and haring a naertiwhr facing rabbets; and a separate relatively A10 fragile bottom slab having its margin litting 85 in said rabbets. face or" the bottom,

'-lhOHOW CODCFGCG Crib having the oot- Signed at Toronto, Canada, this 22nd day ings of its Walls formed with downwardly of Get., 1925. facing rabbets; a separate relatively fragile bottom slab having its margin litting in said JESSE H. TROMANHUSER 

